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Refractive Optics

The use of refractive optics in the synchrotron community is becoming more and more widespread. After some reluctance, over the last couple of years, many beamline users have recently discovered the advantages of refractive beryllium lenses. The lenses are now close to perfect parabolic for both 2D and 1D focusing.

JJ X-Ray has been working with refractive beryllium lenses, both scientifically and commercially, for many years and share the enthusiasm of their outstanding performance regarding both ease of use, alignment and their close to perfect focusing.

Be 2D-lenses

Al 2D-lenses

1D Be-lenses

1D Al-lenses

Length 2.5mm

Length 2.5mm

R (µm)

2R0 (µm)

R (µm)

2R0 (µm)

R (µm)

2R0 (µm)

R (µm)

2R0 (µm)

50

447

50

447

100

632

100

632

200

894

200

894

200

894

200

894

300

1095

300

1095

300

1095

300

1095

500

1414

500

1414

500

1414

500

1414

1000

2000

1000

2000

1000

2000

1000

2000

1500

2449

2000

2828

>2500

On request

We work with lenses from RXOPTICS, and they are available in the above configurations, both in beryllium and aluminum.

The lenses are used in a water-cooled setup as collimating lenses upstream in the white undulator beam or in a non-cooled setup for focusing of the monochromatic beam.

The total focal f length of a stack of N lenses in the thin lens approximation is given by:

where R is the apex radius of curvature and δ is the real part of the refractive index.

You will find more details about the individual refractive optics and find examples of their integration in systems made by JJ X-Ray by clicking on the individual refractive optics in the menu to your left.